Finding the Third Proportional to 31,240 and 63,336

Step by Step Solution

1. Step 1: Write the proportion equation
   31,240 : 63,336 = 63,336 : x
2. Step 2: Convert to fraction form
   31,240/63,336 = 63,336/x
3. Step 3: Cross multiply
   31,240x = 63,336 × 63,336
4. Step 4: Simplify right side
   31,240x = 4,011,448,896
5. Step 5: Solve for x
   x = 4,011,448,896/31,240
6. Step 6: Final answer
   x = 128,407.46