Finding the Third Proportional to 347,674 and 721,992.50

Step by Step Solution

1. Step 1: Write the proportion equation
   347,674 : 721,992.50 = 721,992.50 : x
2. Step 2: Convert to fraction form
   347,674/721,992.50 = 721,992.50/x
3. Step 3: Cross multiply
   347,674x = 721,992.50 × 721,992.50
4. Step 4: Simplify right side
   347,674x = 521,273,170,056.25
5. Step 5: Solve for x
   x = 521,273,170,056.25/347,674
6. Step 6: Final answer
   x = 1,499,315.94