Finding the Third Proportional to 64,803,810 and 91,154,682

Step by Step Solution

1. Step 1: Write the proportion equation
   64,803,810 : 91,154,682 = 91,154,682 : x
2. Step 2: Convert to fraction form
   64,803,810/91,154,682 = 91,154,682/x
3. Step 3: Cross multiply
   64,803,810x = 91,154,682 × 91,154,682
4. Step 4: Simplify right side
   64,803,810x = 8,309,176,050,521,124
5. Step 5: Solve for x
   x = 8,309,176,050,521,124/64,803,810
6. Step 6: Final answer
   x = 128,220,486.58