Finding the Third Proportional to 13,443,668 and 20,663,886

Step by Step Solution

1. Step 1: Write the proportion equation
   13,443,668 : 20,663,886 = 20,663,886 : x
2. Step 2: Convert to fraction form
   13,443,668/20,663,886 = 20,663,886/x
3. Step 3: Cross multiply
   13,443,668x = 20,663,886 × 20,663,886
4. Step 4: Simplify right side
   13,443,668x = 426,996,184,620,996
5. Step 5: Solve for x
   x = 426,996,184,620,996/13,443,668
6. Step 6: Final answer
   x = 31,761,881.10