Finding the Third Proportional to 30,385.13 and 64,536.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,385.13 : 64,536.75 = 64,536.75 : x
2. Step 2: Convert to fraction form
   30,385.13/64,536.75 = 64,536.75/x
3. Step 3: Cross multiply
   30,385.13x = 64,536.75 × 64,536.75
4. Step 4: Simplify right side
   30,385.13x = 4,164,992,100.56
5. Step 5: Solve for x
   x = 4,164,992,100.56/30,385.13
6. Step 6: Final answer
   x = 137,073.39