Finding the Third Proportional to 779,799 and 1,142,662.50

Step by Step Solution

1. Step 1: Write the proportion equation
   779,799 : 1,142,662.50 = 1,142,662.50 : x
2. Step 2: Convert to fraction form
   779,799/1,142,662.50 = 1,142,662.50/x
3. Step 3: Cross multiply
   779,799x = 1,142,662.50 × 1,142,662.50
4. Step 4: Simplify right side
   779,799x = 1,305,677,588,906.25
5. Step 5: Solve for x
   x = 1,305,677,588,906.25/779,799
6. Step 6: Final answer
   x = 1,674,377.10