Finding the Third Proportional to 343,624.50 and 710,820

Step by Step Solution

1. Step 1: Write the proportion equation
   343,624.50 : 710,820 = 710,820 : x
2. Step 2: Convert to fraction form
   343,624.50/710,820 = 710,820/x
3. Step 3: Cross multiply
   343,624.50x = 710,820 × 710,820
4. Step 4: Simplify right side
   343,624.50x = 505,265,072,400
5. Step 5: Solve for x
   x = 505,265,072,400/343,624.50
6. Step 6: Final answer
   x = 1,470,398.86