Finding the Third Proportional to 8,608,964 and 12,867,434

Step by Step Solution

1. Step 1: Write the proportion equation
   8,608,964 : 12,867,434 = 12,867,434 : x
2. Step 2: Convert to fraction form
   8,608,964/12,867,434 = 12,867,434/x
3. Step 3: Cross multiply
   8,608,964x = 12,867,434 × 12,867,434
4. Step 4: Simplify right side
   8,608,964x = 165,570,857,744,356
5. Step 5: Solve for x
   x = 165,570,857,744,356/8,608,964
6. Step 6: Final answer
   x = 19,232,378.92