Finding the Third Proportional to 1,184,660 and 1,688,380

Step by Step Solution

1. Step 1: Write the proportion equation
   1,184,660 : 1,688,380 = 1,688,380 : x
2. Step 2: Convert to fraction form
   1,184,660/1,688,380 = 1,688,380/x
3. Step 3: Cross multiply
   1,184,660x = 1,688,380 × 1,688,380
4. Step 4: Simplify right side
   1,184,660x = 2,850,627,024,400
5. Step 5: Solve for x
   x = 2,850,627,024,400/1,184,660
6. Step 6: Final answer
   x = 2,406,282.84