Finding the Third Proportional to 196,985,401,836.50 and 399,452,153,944

Step by Step Solution

1. Step 1: Write the proportion equation
   196,985,401,836.50 : 399,452,153,944 = 399,452,153,944 : x
2. Step 2: Convert to fraction form
   196,985,401,836.50/399,452,153,944 = 399,452,153,944/x
3. Step 3: Cross multiply
   196,985,401,836.50x = 399,452,153,944 × 399,452,153,944
4. Step 4: Simplify right side
   196,985,401,836.50x = 159,562,023,290,501,072,945,152
5. Step 5: Solve for x
   x = 159,562,023,290,501,072,945,152/196,985,401,836.50
6. Step 6: Final answer
   x = 810,019,533,442.07