Finding the Third Proportional to 8,786,853 and 13,604,274

Step by Step Solution

1. Step 1: Write the proportion equation
   8,786,853 : 13,604,274 = 13,604,274 : x
2. Step 2: Convert to fraction form
   8,786,853/13,604,274 = 13,604,274/x
3. Step 3: Cross multiply
   8,786,853x = 13,604,274 × 13,604,274
4. Step 4: Simplify right side
   8,786,853x = 185,076,271,067,076
5. Step 5: Solve for x
   x = 185,076,271,067,076/8,786,853
6. Step 6: Final answer
   x = 21,062,861.88