Finding the Third Proportional to 84,478.50 and 126,468

Step by Step Solution

1. Step 1: Write the proportion equation
   84,478.50 : 126,468 = 126,468 : x
2. Step 2: Convert to fraction form
   84,478.50/126,468 = 126,468/x
3. Step 3: Cross multiply
   84,478.50x = 126,468 × 126,468
4. Step 4: Simplify right side
   84,478.50x = 15,994,155,024
5. Step 5: Solve for x
   x = 15,994,155,024/84,478.50
6. Step 6: Final answer
   x = 189,328.11