Finding the Third Proportional to 354,453 and 777,802.50

Step by Step Solution

1. Step 1: Write the proportion equation
   354,453 : 777,802.50 = 777,802.50 : x
2. Step 2: Convert to fraction form
   354,453/777,802.50 = 777,802.50/x
3. Step 3: Cross multiply
   354,453x = 777,802.50 × 777,802.50
4. Step 4: Simplify right side
   354,453x = 604,976,729,006.25
5. Step 5: Solve for x
   x = 604,976,729,006.25/354,453
6. Step 6: Final answer
   x = 1,706,789.70