Finding the Third Proportional to 338,249 and 520,089.50

Step by Step Solution

1. Step 1: Write the proportion equation
   338,249 : 520,089.50 = 520,089.50 : x
2. Step 2: Convert to fraction form
   338,249/520,089.50 = 520,089.50/x
3. Step 3: Cross multiply
   338,249x = 520,089.50 × 520,089.50
4. Step 4: Simplify right side
   338,249x = 270,493,088,010.25
5. Step 5: Solve for x
   x = 270,493,088,010.25/338,249
6. Step 6: Final answer
   x = 799,686.29