Finding the Third Proportional to 72,672.19 and 155,851.59

Step by Step Solution

1. Step 1: Write the proportion equation
   72,672.19 : 155,851.59 = 155,851.59 : x
2. Step 2: Convert to fraction form
   72,672.19/155,851.59 = 155,851.59/x
3. Step 3: Cross multiply
   72,672.19x = 155,851.59 × 155,851.59
4. Step 4: Simplify right side
   72,672.19x = 24,289,719,274.42
5. Step 5: Solve for x
   x = 24,289,719,274.42/72,672.19
6. Step 6: Final answer
   x = 334,236.80