Finding the Third Proportional to 161,724 and 345,622.50

Step by Step Solution

1. Step 1: Write the proportion equation
   161,724 : 345,622.50 = 345,622.50 : x
2. Step 2: Convert to fraction form
   161,724/345,622.50 = 345,622.50/x
3. Step 3: Cross multiply
   161,724x = 345,622.50 × 345,622.50
4. Step 4: Simplify right side
   161,724x = 119,454,912,506.25
5. Step 5: Solve for x
   x = 119,454,912,506.25/161,724
6. Step 6: Final answer
   x = 738,634.42