Finding the Third Proportional to 12,983,184 and 20,209,536

Step by Step Solution

1. Step 1: Write the proportion equation
   12,983,184 : 20,209,536 = 20,209,536 : x
2. Step 2: Convert to fraction form
   12,983,184/20,209,536 = 20,209,536/x
3. Step 3: Cross multiply
   12,983,184x = 20,209,536 × 20,209,536
4. Step 4: Simplify right side
   12,983,184x = 408,425,345,335,296
5. Step 5: Solve for x
   x = 408,425,345,335,296/12,983,184
6. Step 6: Final answer
   x = 31,458,026.42