Finding the Third Proportional to 20,909,541 and 30,748,920

Step by Step Solution

1. Step 1: Write the proportion equation
   20,909,541 : 30,748,920 = 30,748,920 : x
2. Step 2: Convert to fraction form
   20,909,541/30,748,920 = 30,748,920/x
3. Step 3: Cross multiply
   20,909,541x = 30,748,920 × 30,748,920
4. Step 4: Simplify right side
   20,909,541x = 945,496,081,166,400
5. Step 5: Solve for x
   x = 945,496,081,166,400/20,909,541
6. Step 6: Final answer
   x = 45,218,404.42