Finding the Third Proportional to 345,986 and 748,833.50

Step by Step Solution

1. Step 1: Write the proportion equation
   345,986 : 748,833.50 = 748,833.50 : x
2. Step 2: Convert to fraction form
   345,986/748,833.50 = 748,833.50/x
3. Step 3: Cross multiply
   345,986x = 748,833.50 × 748,833.50
4. Step 4: Simplify right side
   345,986x = 560,751,610,722.25
5. Step 5: Solve for x
   x = 560,751,610,722.25/345,986
6. Step 6: Final answer
   x = 1,620,734.97