Finding the Third Proportional to 137,538 and 291,640.50

Step by Step Solution

1. Step 1: Write the proportion equation
   137,538 : 291,640.50 = 291,640.50 : x
2. Step 2: Convert to fraction form
   137,538/291,640.50 = 291,640.50/x
3. Step 3: Cross multiply
   137,538x = 291,640.50 × 291,640.50
4. Step 4: Simplify right side
   137,538x = 85,054,181,240.25
5. Step 5: Solve for x
   x = 85,054,181,240.25/137,538
6. Step 6: Final answer
   x = 618,404.96