Finding the Third Proportional to 1,780,142 and 2,758,170

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780,142 : 2,758,170 = 2,758,170 : x
2. Step 2: Convert to fraction form
   1,780,142/2,758,170 = 2,758,170/x
3. Step 3: Cross multiply
   1,780,142x = 2,758,170 × 2,758,170
4. Step 4: Simplify right side
   1,780,142x = 7,607,501,748,900
5. Step 5: Solve for x
   x = 7,607,501,748,900/1,780,142
6. Step 6: Final answer
   x = 4,273,536.46