Finding the Third Proportional to 13,969,144 and 20,867,680

Step by Step Solution

1. Step 1: Write the proportion equation
   13,969,144 : 20,867,680 = 20,867,680 : x
2. Step 2: Convert to fraction form
   13,969,144/20,867,680 = 20,867,680/x
3. Step 3: Cross multiply
   13,969,144x = 20,867,680 × 20,867,680
4. Step 4: Simplify right side
   13,969,144x = 435,460,068,582,400
5. Step 5: Solve for x
   x = 435,460,068,582,400/13,969,144
6. Step 6: Final answer
   x = 31,172,995.90