Finding the Third Proportional to 8,180,784 and 12,805,128

Step by Step Solution

1. Step 1: Write the proportion equation
   8,180,784 : 12,805,128 = 12,805,128 : x
2. Step 2: Convert to fraction form
   8,180,784/12,805,128 = 12,805,128/x
3. Step 3: Cross multiply
   8,180,784x = 12,805,128 × 12,805,128
4. Step 4: Simplify right side
   8,180,784x = 163,971,303,096,384
5. Step 5: Solve for x
   x = 163,971,303,096,384/8,180,784
6. Step 6: Final answer
   x = 20,043,470.54