Finding the Third Proportional to 354,991.50 and 778,833

Step by Step Solution

1. Step 1: Write the proportion equation
   354,991.50 : 778,833 = 778,833 : x
2. Step 2: Convert to fraction form
   354,991.50/778,833 = 778,833/x
3. Step 3: Cross multiply
   354,991.50x = 778,833 × 778,833
4. Step 4: Simplify right side
   354,991.50x = 606,580,841,889
5. Step 5: Solve for x
   x = 606,580,841,889/354,991.50
6. Step 6: Final answer
   x = 1,708,719.34