Finding the Third Proportional to 49,900 and 66,426

Step by Step Solution

1. Step 1: Write the proportion equation
   49,900 : 66,426 = 66,426 : x
2. Step 2: Convert to fraction form
   49,900/66,426 = 66,426/x
3. Step 3: Cross multiply
   49,900x = 66,426 × 66,426
4. Step 4: Simplify right side
   49,900x = 4,412,413,476
5. Step 5: Solve for x
   x = 4,412,413,476/49,900
6. Step 6: Final answer
   x = 88,425.12