Finding the Third Proportional to 91,537,391.25 and 138,157,333.59

Step by Step Solution

1. Step 1: Write the proportion equation
   91,537,391.25 : 138,157,333.59 = 138,157,333.59 : x
2. Step 2: Convert to fraction form
   91,537,391.25/138,157,333.59 = 138,157,333.59/x
3. Step 3: Cross multiply
   91,537,391.25x = 138,157,333.59 × 138,157,333.59
4. Step 4: Simplify right side
   91,537,391.25x = 19,087,448,825,734,724
5. Step 5: Solve for x
   x = 19,087,448,825,734,724/91,537,391.25
6. Step 6: Final answer
   x = 208,520,786.59