Finding the Third Proportional to 51,988.50 and 83,720.25

Step by Step Solution

1. Step 1: Write the proportion equation
   51,988.50 : 83,720.25 = 83,720.25 : x
2. Step 2: Convert to fraction form
   51,988.50/83,720.25 = 83,720.25/x
3. Step 3: Cross multiply
   51,988.50x = 83,720.25 × 83,720.25
4. Step 4: Simplify right side
   51,988.50x = 7,009,080,260.06
5. Step 5: Solve for x
   x = 7,009,080,260.06/51,988.50
6. Step 6: Final answer
   x = 134,819.82