Finding the Third Proportional to 91,504,812.80 and 139,401,346.78

Step by Step Solution

1. Step 1: Write the proportion equation
   91,504,812.80 : 139,401,346.78 = 139,401,346.78 : x
2. Step 2: Convert to fraction form
   91,504,812.80/139,401,346.78 = 139,401,346.78/x
3. Step 3: Cross multiply
   91,504,812.80x = 139,401,346.78 × 139,401,346.78
4. Step 4: Simplify right side
   91,504,812.80x = 19,432,735,484,426,320
5. Step 5: Solve for x
   x = 19,432,735,484,426,320/91,504,812.80
6. Step 6: Final answer
   x = 212,368,452.44