Finding the Third Proportional to 11,726,740 and 17,938,878

Step by Step Solution

1. Step 1: Write the proportion equation
   11,726,740 : 17,938,878 = 17,938,878 : x
2. Step 2: Convert to fraction form
   11,726,740/17,938,878 = 17,938,878/x
3. Step 3: Cross multiply
   11,726,740x = 17,938,878 × 17,938,878
4. Step 4: Simplify right side
   11,726,740x = 321,803,343,898,884
5. Step 5: Solve for x
   x = 321,803,343,898,884/11,726,740
6. Step 6: Final answer
   x = 27,441,841.80