Finding the Third Proportional to 238,974 and 521,426

Step by Step Solution

1. Step 1: Write the proportion equation
   238,974 : 521,426 = 521,426 : x
2. Step 2: Convert to fraction form
   238,974/521,426 = 521,426/x
3. Step 3: Cross multiply
   238,974x = 521,426 × 521,426
4. Step 4: Simplify right side
   238,974x = 271,885,073,476
5. Step 5: Solve for x
   x = 271,885,073,476/238,974
6. Step 6: Final answer
   x = 1,137,718.22