Finding the Third Proportional to 786,290 and 1,684,756

Step by Step Solution

1. Step 1: Write the proportion equation
   786,290 : 1,684,756 = 1,684,756 : x
2. Step 2: Convert to fraction form
   786,290/1,684,756 = 1,684,756/x
3. Step 3: Cross multiply
   786,290x = 1,684,756 × 1,684,756
4. Step 4: Simplify right side
   786,290x = 2,838,402,779,536
5. Step 5: Solve for x
   x = 2,838,402,779,536/786,290
6. Step 6: Final answer
   x = 3,609,867.58