Finding the Third Proportional to 4,129,068 and 8,890,911

Step by Step Solution

1. Step 1: Write the proportion equation
   4,129,068 : 8,890,911 = 8,890,911 : x
2. Step 2: Convert to fraction form
   4,129,068/8,890,911 = 8,890,911/x
3. Step 3: Cross multiply
   4,129,068x = 8,890,911 × 8,890,911
4. Step 4: Simplify right side
   4,129,068x = 79,048,298,409,921
5. Step 5: Solve for x
   x = 79,048,298,409,921/4,129,068
6. Step 6: Final answer
   x = 19,144,344.05