Finding the Third Proportional to 13,443,681 and 20,663,906

Step by Step Solution

1. Step 1: Write the proportion equation
   13,443,681 : 20,663,906 = 20,663,906 : x
2. Step 2: Convert to fraction form
   13,443,681/20,663,906 = 20,663,906/x
3. Step 3: Cross multiply
   13,443,681x = 20,663,906 × 20,663,906
4. Step 4: Simplify right side
   13,443,681x = 426,997,011,176,836
5. Step 5: Solve for x
   x = 426,997,011,176,836/13,443,681
6. Step 6: Final answer
   x = 31,761,911.87