Finding the Third Proportional to 84,099 and 126,499.50

Step by Step Solution

1. Step 1: Write the proportion equation
   84,099 : 126,499.50 = 126,499.50 : x
2. Step 2: Convert to fraction form
   84,099/126,499.50 = 126,499.50/x
3. Step 3: Cross multiply
   84,099x = 126,499.50 × 126,499.50
4. Step 4: Simplify right side
   84,099x = 16,002,123,500.25
5. Step 5: Solve for x
   x = 16,002,123,500.25/84,099
6. Step 6: Final answer
   x = 190,277.21