Finding the Third Proportional to 4,571,739 and 9,931,589

Step by Step Solution

1. Step 1: Write the proportion equation
   4,571,739 : 9,931,589 = 9,931,589 : x
2. Step 2: Convert to fraction form
   4,571,739/9,931,589 = 9,931,589/x
3. Step 3: Cross multiply
   4,571,739x = 9,931,589 × 9,931,589
4. Step 4: Simplify right side
   4,571,739x = 98,636,460,064,921
5. Step 5: Solve for x
   x = 98,636,460,064,921/4,571,739
6. Step 6: Final answer
   x = 21,575,260.54