Finding the Third Proportional to 249,077 and 389,169.50

Step by Step Solution

1. Step 1: Write the proportion equation
   249,077 : 389,169.50 = 389,169.50 : x
2. Step 2: Convert to fraction form
   249,077/389,169.50 = 389,169.50/x
3. Step 3: Cross multiply
   249,077x = 389,169.50 × 389,169.50
4. Step 4: Simplify right side
   249,077x = 151,452,899,730.25
5. Step 5: Solve for x
   x = 151,452,899,730.25/249,077
6. Step 6: Final answer
   x = 608,056.54