Finding the Third Proportional to 13,778,516 and 21,504,990

Step by Step Solution

1. Step 1: Write the proportion equation
   13,778,516 : 21,504,990 = 21,504,990 : x
2. Step 2: Convert to fraction form
   13,778,516/21,504,990 = 21,504,990/x
3. Step 3: Cross multiply
   13,778,516x = 21,504,990 × 21,504,990
4. Step 4: Simplify right side
   13,778,516x = 462,464,594,900,100
5. Step 5: Solve for x
   x = 462,464,594,900,100/13,778,516
6. Step 6: Final answer
   x = 33,564,180.27