Finding the Third Proportional to 249,993 and 387,193.50

Step by Step Solution

1. Step 1: Write the proportion equation
   249,993 : 387,193.50 = 387,193.50 : x
2. Step 2: Convert to fraction form
   249,993/387,193.50 = 387,193.50/x
3. Step 3: Cross multiply
   249,993x = 387,193.50 × 387,193.50
4. Step 4: Simplify right side
   249,993x = 149,918,806,442.25
5. Step 5: Solve for x
   x = 149,918,806,442.25/249,993
6. Step 6: Final answer
   x = 599,692.02