Finding the Third Proportional to 72,155.81 and 157,889.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72,155.81 : 157,889.25 = 157,889.25 : x
2. Step 2: Convert to fraction form
   72,155.81/157,889.25 = 157,889.25/x
3. Step 3: Cross multiply
   72,155.81x = 157,889.25 × 157,889.25
4. Step 4: Simplify right side
   72,155.81x = 24,929,015,265.56
5. Step 5: Solve for x
   x = 24,929,015,265.56/72,155.81
6. Step 6: Final answer
   x = 345,488.66