Finding the Third Proportional to 51,128,213 and 71,915,245

Step by Step Solution

1. Step 1: Write the proportion equation
   51,128,213 : 71,915,245 = 71,915,245 : x
2. Step 2: Convert to fraction form
   51,128,213/71,915,245 = 71,915,245/x
3. Step 3: Cross multiply
   51,128,213x = 71,915,245 × 71,915,245
4. Step 4: Simplify right side
   51,128,213x = 5,171,802,463,410,025
5. Step 5: Solve for x
   x = 5,171,802,463,410,025/51,128,213
6. Step 6: Final answer
   x = 101,153,593.29