Finding the Third Proportional to 645,742 and 1,317,764

Step by Step Solution

1. Step 1: Write the proportion equation
   645,742 : 1,317,764 = 1,317,764 : x
2. Step 2: Convert to fraction form
   645,742/1,317,764 = 1,317,764/x
3. Step 3: Cross multiply
   645,742x = 1,317,764 × 1,317,764
4. Step 4: Simplify right side
   645,742x = 1,736,501,959,696
5. Step 5: Solve for x
   x = 1,736,501,959,696/645,742
6. Step 6: Final answer
   x = 2,689,157.53