Finding the Third Proportional to 102,640,018.50 and 212,555,522.25

Step by Step Solution

1. Step 1: Write the proportion equation
   102,640,018.50 : 212,555,522.25 = 212,555,522.25 : x
2. Step 2: Convert to fraction form
   102,640,018.50/212,555,522.25 = 212,555,522.25/x
3. Step 3: Cross multiply
   102,640,018.50x = 212,555,522.25 × 212,555,522.25
4. Step 4: Simplify right side
   102,640,018.50x = 45,179,850,038,970,248
5. Step 5: Solve for x
   x = 45,179,850,038,970,248/102,640,018.50
6. Step 6: Final answer
   x = 440,177,726.96