Finding the Third Proportional to 316,089 and 484,699.50

Step by Step Solution

1. Step 1: Write the proportion equation
   316,089 : 484,699.50 = 484,699.50 : x
2. Step 2: Convert to fraction form
   316,089/484,699.50 = 484,699.50/x
3. Step 3: Cross multiply
   316,089x = 484,699.50 × 484,699.50
4. Step 4: Simplify right side
   316,089x = 234,933,605,300.25
5. Step 5: Solve for x
   x = 234,933,605,300.25/316,089
6. Step 6: Final answer
   x = 743,251.44