Finding the Third Proportional to 1,720,640 and 2,662,972

Step by Step Solution

1. Step 1: Write the proportion equation
   1,720,640 : 2,662,972 = 2,662,972 : x
2. Step 2: Convert to fraction form
   1,720,640/2,662,972 = 2,662,972/x
3. Step 3: Cross multiply
   1,720,640x = 2,662,972 × 2,662,972
4. Step 4: Simplify right side
   1,720,640x = 7,091,419,872,784
5. Step 5: Solve for x
   x = 7,091,419,872,784/1,720,640
6. Step 6: Final answer
   x = 4,121,384.99