Finding the Third Proportional to 57,747,795.75 and 128,407,087.69

Step by Step Solution

1. Step 1: Write the proportion equation
   57,747,795.75 : 128,407,087.69 = 128,407,087.69 : x
2. Step 2: Convert to fraction form
   57,747,795.75/128,407,087.69 = 128,407,087.69/x
3. Step 3: Cross multiply
   57,747,795.75x = 128,407,087.69 × 128,407,087.69
4. Step 4: Simplify right side
   57,747,795.75x = 16,488,380,168,385,314
5. Step 5: Solve for x
   x = 16,488,380,168,385,314/57,747,795.75
6. Step 6: Final answer
   x = 285,523,974.63