Finding the Third Proportional to 64,715,860 and 91,027,426

Step by Step Solution

1. Step 1: Write the proportion equation
   64,715,860 : 91,027,426 = 91,027,426 : x
2. Step 2: Convert to fraction form
   64,715,860/91,027,426 = 91,027,426/x
3. Step 3: Cross multiply
   64,715,860x = 91,027,426 × 91,027,426
4. Step 4: Simplify right side
   64,715,860x = 8,285,992,284,185,476
5. Step 5: Solve for x
   x = 8,285,992,284,185,476/64,715,860
6. Step 6: Final answer
   x = 128,036,501.16