Finding the Third Proportional to 600,249 and 915,619.50

Step by Step Solution

1. Step 1: Write the proportion equation
   600,249 : 915,619.50 = 915,619.50 : x
2. Step 2: Convert to fraction form
   600,249/915,619.50 = 915,619.50/x
3. Step 3: Cross multiply
   600,249x = 915,619.50 × 915,619.50
4. Step 4: Simplify right side
   600,249x = 838,359,068,780.25
5. Step 5: Solve for x
   x = 838,359,068,780.25/600,249
6. Step 6: Final answer
   x = 1,396,685.49