Finding the Third Proportional to 656,216 and 938,388

Step by Step Solution

1. Step 1: Write the proportion equation
   656,216 : 938,388 = 938,388 : x
2. Step 2: Convert to fraction form
   656,216/938,388 = 938,388/x
3. Step 3: Cross multiply
   656,216x = 938,388 × 938,388
4. Step 4: Simplify right side
   656,216x = 880,572,038,544
5. Step 5: Solve for x
   x = 880,572,038,544/656,216
6. Step 6: Final answer
   x = 1,341,893.58