Finding the Third Proportional to 61,921.50 and 89,858.25

Step by Step Solution

1. Step 1: Write the proportion equation
   61,921.50 : 89,858.25 = 89,858.25 : x
2. Step 2: Convert to fraction form
   61,921.50/89,858.25 = 89,858.25/x
3. Step 3: Cross multiply
   61,921.50x = 89,858.25 × 89,858.25
4. Step 4: Simplify right side
   61,921.50x = 8,074,505,093.06
5. Step 5: Solve for x
   x = 8,074,505,093.06/61,921.50
6. Step 6: Final answer
   x = 130,399.06