Finding the Third Proportional to 1,872,172 and 4,042,665

Step by Step Solution

1. Step 1: Write the proportion equation
   1,872,172 : 4,042,665 = 4,042,665 : x
2. Step 2: Convert to fraction form
   1,872,172/4,042,665 = 4,042,665/x
3. Step 3: Cross multiply
   1,872,172x = 4,042,665 × 4,042,665
4. Step 4: Simplify right side
   1,872,172x = 16,343,140,302,225
5. Step 5: Solve for x
   x = 16,343,140,302,225/1,872,172
6. Step 6: Final answer
   x = 8,729,507.92