Finding the Third Proportional to 61,642.50 and 88,089.75

Step by Step Solution

1. Step 1: Write the proportion equation
   61,642.50 : 88,089.75 = 88,089.75 : x
2. Step 2: Convert to fraction form
   61,642.50/88,089.75 = 88,089.75/x
3. Step 3: Cross multiply
   61,642.50x = 88,089.75 × 88,089.75
4. Step 4: Simplify right side
   61,642.50x = 7,759,804,055.06
5. Step 5: Solve for x
   x = 7,759,804,055.06/61,642.50
6. Step 6: Final answer
   x = 125,883.99