Finding the Third Proportional to 39,430.13 and 84,391.88

Step by Step Solution

1. Step 1: Write the proportion equation
   39,430.13 : 84,391.88 = 84,391.88 : x
2. Step 2: Convert to fraction form
   39,430.13/84,391.88 = 84,391.88/x
3. Step 3: Cross multiply
   39,430.13x = 84,391.88 × 84,391.88
4. Step 4: Simplify right side
   39,430.13x = 7,121,988,566.02
5. Step 5: Solve for x
   x = 7,121,988,566.02/39,430.13
6. Step 6: Final answer
   x = 180,623.03