Finding the Third Proportional to 765,774 and 1,688,040

Step by Step Solution

1. Step 1: Write the proportion equation
   765,774 : 1,688,040 = 1,688,040 : x
2. Step 2: Convert to fraction form
   765,774/1,688,040 = 1,688,040/x
3. Step 3: Cross multiply
   765,774x = 1,688,040 × 1,688,040
4. Step 4: Simplify right side
   765,774x = 2,849,479,041,600
5. Step 5: Solve for x
   x = 2,849,479,041,600/765,774
6. Step 6: Final answer
   x = 3,721,044.38