Finding the Third Proportional to 1,780,142 and 2,758,172

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780,142 : 2,758,172 = 2,758,172 : x
2. Step 2: Convert to fraction form
   1,780,142/2,758,172 = 2,758,172/x
3. Step 3: Cross multiply
   1,780,142x = 2,758,172 × 2,758,172
4. Step 4: Simplify right side
   1,780,142x = 7,607,512,781,584
5. Step 5: Solve for x
   x = 7,607,512,781,584/1,780,142
6. Step 6: Final answer
   x = 4,273,542.66