Finding the Third Proportional to 61,073.25 and 87,172.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,073.25 : 87,172.50 = 87,172.50 : x
2. Step 2: Convert to fraction form
   61,073.25/87,172.50 = 87,172.50/x
3. Step 3: Cross multiply
   61,073.25x = 87,172.50 × 87,172.50
4. Step 4: Simplify right side
   61,073.25x = 7,599,044,756.25
5. Step 5: Solve for x
   x = 7,599,044,756.25/61,073.25
6. Step 6: Final answer
   x = 124,425.09