Finding the Third Proportional to 684,188 and 1,038,284

Step by Step Solution

1. Step 1: Write the proportion equation
   684,188 : 1,038,284 = 1,038,284 : x
2. Step 2: Convert to fraction form
   684,188/1,038,284 = 1,038,284/x
3. Step 3: Cross multiply
   684,188x = 1,038,284 × 1,038,284
4. Step 4: Simplify right side
   684,188x = 1,078,033,664,656
5. Step 5: Solve for x
   x = 1,078,033,664,656/684,188
6. Step 6: Final answer
   x = 1,575,639.54