Finding the Third Proportional to 53,663.77 and 78,854.77

Step by Step Solution

1. Step 1: Write the proportion equation
   53,663.77 : 78,854.77 = 78,854.77 : x
2. Step 2: Convert to fraction form
   53,663.77/78,854.77 = 78,854.77/x
3. Step 3: Cross multiply
   53,663.77x = 78,854.77 × 78,854.77
4. Step 4: Simplify right side
   53,663.77x = 6,218,074,061.77
5. Step 5: Solve for x
   x = 6,218,074,061.77/53,663.77
6. Step 6: Final answer
   x = 115,871.00