Finding the Third Proportional to 78,543.42 and 169,540.59

Step by Step Solution

1. Step 1: Write the proportion equation
   78,543.42 : 169,540.59 = 169,540.59 : x
2. Step 2: Convert to fraction form
   78,543.42/169,540.59 = 169,540.59/x
3. Step 3: Cross multiply
   78,543.42x = 169,540.59 × 169,540.59
4. Step 4: Simplify right side
   78,543.42x = 28,744,012,929.10
5. Step 5: Solve for x
   x = 28,744,012,929.10/78,543.42
6. Step 6: Final answer
   x = 365,963.34