Finding the Third Proportional to 399,048 and 875,701.50

Step by Step Solution

1. Step 1: Write the proportion equation
   399,048 : 875,701.50 = 875,701.50 : x
2. Step 2: Convert to fraction form
   399,048/875,701.50 = 875,701.50/x
3. Step 3: Cross multiply
   399,048x = 875,701.50 × 875,701.50
4. Step 4: Simplify right side
   399,048x = 766,853,117,102.25
5. Step 5: Solve for x
   x = 766,853,117,102.25/399,048
6. Step 6: Final answer
   x = 1,921,706.45