Finding the Third Proportional to 30,261 and 64,691.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,261 : 64,691.25 = 64,691.25 : x
2. Step 2: Convert to fraction form
   30,261/64,691.25 = 64,691.25/x
3. Step 3: Cross multiply
   30,261x = 64,691.25 × 64,691.25
4. Step 4: Simplify right side
   30,261x = 4,184,957,826.56
5. Step 5: Solve for x
   x = 4,184,957,826.56/30,261
6. Step 6: Final answer
   x = 138,295.42