Finding the Third Proportional to 238,112 and 521,536

Step by Step Solution

1. Step 1: Write the proportion equation
   238,112 : 521,536 = 521,536 : x
2. Step 2: Convert to fraction form
   238,112/521,536 = 521,536/x
3. Step 3: Cross multiply
   238,112x = 521,536 × 521,536
4. Step 4: Simplify right side
   238,112x = 271,999,799,296
5. Step 5: Solve for x
   x = 271,999,799,296/238,112
6. Step 6: Final answer
   x = 1,142,318.74