Finding the Third Proportional to 637,152 and 1,390,216

Step by Step Solution

1. Step 1: Write the proportion equation
   637,152 : 1,390,216 = 1,390,216 : x
2. Step 2: Convert to fraction form
   637,152/1,390,216 = 1,390,216/x
3. Step 3: Cross multiply
   637,152x = 1,390,216 × 1,390,216
4. Step 4: Simplify right side
   637,152x = 1,932,700,526,656
5. Step 5: Solve for x
   x = 1,932,700,526,656/637,152
6. Step 6: Final answer
   x = 3,033,342.95