Finding the Third Proportional to 4,059,530 and 8,731,420

Step by Step Solution

1. Step 1: Write the proportion equation
   4,059,530 : 8,731,420 = 8,731,420 : x
2. Step 2: Convert to fraction form
   4,059,530/8,731,420 = 8,731,420/x
3. Step 3: Cross multiply
   4,059,530x = 8,731,420 × 8,731,420
4. Step 4: Simplify right side
   4,059,530x = 76,237,695,216,400
5. Step 5: Solve for x
   x = 76,237,695,216,400/4,059,530
6. Step 6: Final answer
   x = 18,779,931.47