Finding the Third Proportional to 53,613 and 81,571.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,613 : 81,571.50 = 81,571.50 : x
2. Step 2: Convert to fraction form
   53,613/81,571.50 = 81,571.50/x
3. Step 3: Cross multiply
   53,613x = 81,571.50 × 81,571.50
4. Step 4: Simplify right side
   53,613x = 6,653,909,612.25
5. Step 5: Solve for x
   x = 6,653,909,612.25/53,613
6. Step 6: Final answer
   x = 124,110.00