Finding the Third Proportional to 83,310 and 129,035.50

Step by Step Solution

1. Step 1: Write the proportion equation
   83,310 : 129,035.50 = 129,035.50 : x
2. Step 2: Convert to fraction form
   83,310/129,035.50 = 129,035.50/x
3. Step 3: Cross multiply
   83,310x = 129,035.50 × 129,035.50
4. Step 4: Simplify right side
   83,310x = 16,650,160,260.25
5. Step 5: Solve for x
   x = 16,650,160,260.25/83,310
6. Step 6: Final answer
   x = 199,857.88