Finding the Third Proportional to 4,456,637 and 9,767,640

Step by Step Solution

1. Step 1: Write the proportion equation
   4,456,637 : 9,767,640 = 9,767,640 : x
2. Step 2: Convert to fraction form
   4,456,637/9,767,640 = 9,767,640/x
3. Step 3: Cross multiply
   4,456,637x = 9,767,640 × 9,767,640
4. Step 4: Simplify right side
   4,456,637x = 95,406,791,169,600
5. Step 5: Solve for x
   x = 95,406,791,169,600/4,456,637
6. Step 6: Final answer
   x = 21,407,799.46