Finding the Third Proportional to 2,064,640 and 4,445,640

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064,640 : 4,445,640 = 4,445,640 : x
2. Step 2: Convert to fraction form
   2,064,640/4,445,640 = 4,445,640/x
3. Step 3: Cross multiply
   2,064,640x = 4,445,640 × 4,445,640
4. Step 4: Simplify right side
   2,064,640x = 19,763,715,009,600
5. Step 5: Solve for x
   x = 19,763,715,009,600/2,064,640
6. Step 6: Final answer
   x = 9,572,475.11