Finding the Third Proportional to 61,340.63 and 86,987.25

Step by Step Solution

1. Step 1: Write the proportion equation
   61,340.63 : 86,987.25 = 86,987.25 : x
2. Step 2: Convert to fraction form
   61,340.63/86,987.25 = 86,987.25/x
3. Step 3: Cross multiply
   61,340.63x = 86,987.25 × 86,987.25
4. Step 4: Simplify right side
   61,340.63x = 7,566,781,662.56
5. Step 5: Solve for x
   x = 7,566,781,662.56/61,340.63
6. Step 6: Final answer
   x = 123,356.77