Finding the Third Proportional to 238,839 and 521,967

Step by Step Solution

1. Step 1: Write the proportion equation
   238,839 : 521,967 = 521,967 : x
2. Step 2: Convert to fraction form
   238,839/521,967 = 521,967/x
3. Step 3: Cross multiply
   238,839x = 521,967 × 521,967
4. Step 4: Simplify right side
   238,839x = 272,449,549,089
5. Step 5: Solve for x
   x = 272,449,549,089/238,839
6. Step 6: Final answer
   x = 1,140,724.71