Finding the Third Proportional to 238,846 and 521,980

Step by Step Solution

1. Step 1: Write the proportion equation
   238,846 : 521,980 = 521,980 : x
2. Step 2: Convert to fraction form
   238,846/521,980 = 521,980/x
3. Step 3: Cross multiply
   238,846x = 521,980 × 521,980
4. Step 4: Simplify right side
   238,846x = 272,463,120,400
5. Step 5: Solve for x
   x = 272,463,120,400/238,846
6. Step 6: Final answer
   x = 1,140,748.10