Finding the Third Proportional to 690,411.50 and 1,476,779.50

Step by Step Solution

1. Step 1: Write the proportion equation
   690,411.50 : 1,476,779.50 = 1,476,779.50 : x
2. Step 2: Convert to fraction form
   690,411.50/1,476,779.50 = 1,476,779.50/x
3. Step 3: Cross multiply
   690,411.50x = 1,476,779.50 × 1,476,779.50
4. Step 4: Simplify right side
   690,411.50x = 2,180,877,691,620.25
5. Step 5: Solve for x
   x = 2,180,877,691,620.25/690,411.50
6. Step 6: Final answer
   x = 3,158,808.47