Finding the Third Proportional to 73,788.75 and 161,428.50

Step by Step Solution

1. Step 1: Write the proportion equation
   73,788.75 : 161,428.50 = 161,428.50 : x
2. Step 2: Convert to fraction form
   73,788.75/161,428.50 = 161,428.50/x
3. Step 3: Cross multiply
   73,788.75x = 161,428.50 × 161,428.50
4. Step 4: Simplify right side
   73,788.75x = 26,059,160,612.25
5. Step 5: Solve for x
   x = 26,059,160,612.25/73,788.75
6. Step 6: Final answer
   x = 353,158.99