Finding the Third Proportional to 1,780,146 and 2,758,178

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780,146 : 2,758,178 = 2,758,178 : x
2. Step 2: Convert to fraction form
   1,780,146/2,758,178 = 2,758,178/x
3. Step 3: Cross multiply
   1,780,146x = 2,758,178 × 2,758,178
4. Step 4: Simplify right side
   1,780,146x = 7,607,545,879,684
5. Step 5: Solve for x
   x = 7,607,545,879,684/1,780,146
6. Step 6: Final answer
   x = 4,273,551.65