Finding the Third Proportional to 30,259.13 and 64,117.69

Step by Step Solution

1. Step 1: Write the proportion equation
   30,259.13 : 64,117.69 = 64,117.69 : x
2. Step 2: Convert to fraction form
   30,259.13/64,117.69 = 64,117.69/x
3. Step 3: Cross multiply
   30,259.13x = 64,117.69 × 64,117.69
4. Step 4: Simplify right side
   30,259.13x = 4,111,077,850.35
5. Step 5: Solve for x
   x = 4,111,077,850.35/30,259.13
6. Step 6: Final answer
   x = 135,862.42