Finding the Third Proportional to 55,786 and 84,987.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,786 : 84,987.50 = 84,987.50 : x
2. Step 2: Convert to fraction form
   55,786/84,987.50 = 84,987.50/x
3. Step 3: Cross multiply
   55,786x = 84,987.50 × 84,987.50
4. Step 4: Simplify right side
   55,786x = 7,222,875,156.25
5. Step 5: Solve for x
   x = 7,222,875,156.25/55,786
6. Step 6: Final answer
   x = 129,474.69