Finding the Third Proportional to 30,145.50 and 63,686.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,145.50 : 63,686.25 = 63,686.25 : x
2. Step 2: Convert to fraction form
   30,145.50/63,686.25 = 63,686.25/x
3. Step 3: Cross multiply
   30,145.50x = 63,686.25 × 63,686.25
4. Step 4: Simplify right side
   30,145.50x = 4,055,938,439.06
5. Step 5: Solve for x
   x = 4,055,938,439.06/30,145.50
6. Step 6: Final answer
   x = 134,545.40