Finding the Third Proportional to 3,909,292 and 8,487,032

Step by Step Solution

1. Step 1: Write the proportion equation
   3,909,292 : 8,487,032 = 8,487,032 : x
2. Step 2: Convert to fraction form
   3,909,292/8,487,032 = 8,487,032/x
3. Step 3: Cross multiply
   3,909,292x = 8,487,032 × 8,487,032
4. Step 4: Simplify right side
   3,909,292x = 72,029,712,169,024
5. Step 5: Solve for x
   x = 72,029,712,169,024/3,909,292
6. Step 6: Final answer
   x = 18,425,257.61