Finding the Third Proportional to 244,572 and 386,557.50

Step by Step Solution

1. Step 1: Write the proportion equation
   244,572 : 386,557.50 = 386,557.50 : x
2. Step 2: Convert to fraction form
   244,572/386,557.50 = 386,557.50/x
3. Step 3: Cross multiply
   244,572x = 386,557.50 × 386,557.50
4. Step 4: Simplify right side
   244,572x = 149,426,700,806.25
5. Step 5: Solve for x
   x = 149,426,700,806.25/244,572
6. Step 6: Final answer
   x = 610,972.23