Finding the Third Proportional to 8,687,535 and 12,985,377

Step by Step Solution

1. Step 1: Write the proportion equation
   8,687,535 : 12,985,377 = 12,985,377 : x
2. Step 2: Convert to fraction form
   8,687,535/12,985,377 = 12,985,377/x
3. Step 3: Cross multiply
   8,687,535x = 12,985,377 × 12,985,377
4. Step 4: Simplify right side
   8,687,535x = 168,620,015,832,129
5. Step 5: Solve for x
   x = 168,620,015,832,129/8,687,535
6. Step 6: Final answer
   x = 19,409,420.03