Finding the Third Proportional to 343,899 and 755,869.50

Step by Step Solution

1. Step 1: Write the proportion equation
   343,899 : 755,869.50 = 755,869.50 : x
2. Step 2: Convert to fraction form
   343,899/755,869.50 = 755,869.50/x
3. Step 3: Cross multiply
   343,899x = 755,869.50 × 755,869.50
4. Step 4: Simplify right side
   343,899x = 571,338,701,030.25
5. Step 5: Solve for x
   x = 571,338,701,030.25/343,899
6. Step 6: Final answer
   x = 1,661,356.10