Finding the Third Proportional to 53,623 and 81,587.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,623 : 81,587.50 = 81,587.50 : x
2. Step 2: Convert to fraction form
   53,623/81,587.50 = 81,587.50/x
3. Step 3: Cross multiply
   53,623x = 81,587.50 × 81,587.50
4. Step 4: Simplify right side
   53,623x = 6,656,520,156.25
5. Step 5: Solve for x
   x = 6,656,520,156.25/53,623
6. Step 6: Final answer
   x = 124,135.54