Finding the Third Proportional to 259,671 and 392,314.50

Step by Step Solution

1. Step 1: Write the proportion equation
   259,671 : 392,314.50 = 392,314.50 : x
2. Step 2: Convert to fraction form
   259,671/392,314.50 = 392,314.50/x
3. Step 3: Cross multiply
   259,671x = 392,314.50 × 392,314.50
4. Step 4: Simplify right side
   259,671x = 153,910,666,910.25
5. Step 5: Solve for x
   x = 153,910,666,910.25/259,671
6. Step 6: Final answer
   x = 592,714.11