Finding the Third Proportional to 238,914 and 521,604

Step by Step Solution

1. Step 1: Write the proportion equation
   238,914 : 521,604 = 521,604 : x
2. Step 2: Convert to fraction form
   238,914/521,604 = 521,604/x
3. Step 3: Cross multiply
   238,914x = 521,604 × 521,604
4. Step 4: Simplify right side
   238,914x = 272,070,732,816
5. Step 5: Solve for x
   x = 272,070,732,816/238,914
6. Step 6: Final answer
   x = 1,138,781.04