Finding the Third Proportional to 343,359 and 520,870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   343,359 : 520,870.50 = 520,870.50 : x
2. Step 2: Convert to fraction form
   343,359/520,870.50 = 520,870.50/x
3. Step 3: Cross multiply
   343,359x = 520,870.50 × 520,870.50
4. Step 4: Simplify right side
   343,359x = 271,306,077,770.25
5. Step 5: Solve for x
   x = 271,306,077,770.25/343,359
6. Step 6: Final answer
   x = 790,152.81