Finding the Third Proportional to 148,018.50 and 324,157.50

Step by Step Solution

1. Step 1: Write the proportion equation
   148,018.50 : 324,157.50 = 324,157.50 : x
2. Step 2: Convert to fraction form
   148,018.50/324,157.50 = 324,157.50/x
3. Step 3: Cross multiply
   148,018.50x = 324,157.50 × 324,157.50
4. Step 4: Simplify right side
   148,018.50x = 105,078,084,806.25
5. Step 5: Solve for x
   x = 105,078,084,806.25/148,018.50
6. Step 6: Final answer
   x = 709,898.32