Finding the Third Proportional to 770,064 and 1,688,928

Step by Step Solution

1. Step 1: Write the proportion equation
   770,064 : 1,688,928 = 1,688,928 : x
2. Step 2: Convert to fraction form
   770,064/1,688,928 = 1,688,928/x
3. Step 3: Cross multiply
   770,064x = 1,688,928 × 1,688,928
4. Step 4: Simplify right side
   770,064x = 2,852,477,789,184
5. Step 5: Solve for x
   x = 2,852,477,789,184/770,064
6. Step 6: Final answer
   x = 3,704,208.73