Finding the Third Proportional to 1,067,780 and 1,438,230

Step by Step Solution

1. Step 1: Write the proportion equation
   1,067,780 : 1,438,230 = 1,438,230 : x
2. Step 2: Convert to fraction form
   1,067,780/1,438,230 = 1,438,230/x
3. Step 3: Cross multiply
   1,067,780x = 1,438,230 × 1,438,230
4. Step 4: Simplify right side
   1,067,780x = 2,068,505,532,900
5. Step 5: Solve for x
   x = 2,068,505,532,900/1,067,780
6. Step 6: Final answer
   x = 1,937,201.98