Finding the Third Proportional to 63,210.38 and 139,147.88

Step by Step Solution

1. Step 1: Write the proportion equation
   63,210.38 : 139,147.88 = 139,147.88 : x
2. Step 2: Convert to fraction form
   63,210.38/139,147.88 = 139,147.88/x
3. Step 3: Cross multiply
   63,210.38x = 139,147.88 × 139,147.88
4. Step 4: Simplify right side
   63,210.38x = 19,362,131,117.02
5. Step 5: Solve for x
   x = 19,362,131,117.02/63,210.38
6. Step 6: Final answer
   x = 306,312.55