Finding the Third Proportional to 5,664,588 and 8,543,894

Step by Step Solution

1. Step 1: Write the proportion equation
   5,664,588 : 8,543,894 = 8,543,894 : x
2. Step 2: Convert to fraction form
   5,664,588/8,543,894 = 8,543,894/x
3. Step 3: Cross multiply
   5,664,588x = 8,543,894 × 8,543,894
4. Step 4: Simplify right side
   5,664,588x = 72,998,124,683,236
5. Step 5: Solve for x
   x = 72,998,124,683,236/5,664,588
6. Step 6: Final answer
   x = 12,886,749.17