Finding the Third Proportional to 64,941.75 and 99,721.13

Step by Step Solution

1. Step 1: Write the proportion equation
   64,941.75 : 99,721.13 = 99,721.13 : x
2. Step 2: Convert to fraction form
   64,941.75/99,721.13 = 99,721.13/x
3. Step 3: Cross multiply
   64,941.75x = 99,721.13 × 99,721.13
4. Step 4: Simplify right side
   64,941.75x = 9,944,302,771.27
5. Step 5: Solve for x
   x = 9,944,302,771.27/64,941.75
6. Step 6: Final answer
   x = 153,126.50