Finding the Third Proportional to 357,910.50 and 771,864

Step by Step Solution

1. Step 1: Write the proportion equation
   357,910.50 : 771,864 = 771,864 : x
2. Step 2: Convert to fraction form
   357,910.50/771,864 = 771,864/x
3. Step 3: Cross multiply
   357,910.50x = 771,864 × 771,864
4. Step 4: Simplify right side
   357,910.50x = 595,774,034,496
5. Step 5: Solve for x
   x = 595,774,034,496/357,910.50
6. Step 6: Final answer
   x = 1,664,589.43