Finding the Third Proportional to 4,290,084 and 8,877,132

Step by Step Solution

1. Step 1: Write the proportion equation
   4,290,084 : 8,877,132 = 8,877,132 : x
2. Step 2: Convert to fraction form
   4,290,084/8,877,132 = 8,877,132/x
3. Step 3: Cross multiply
   4,290,084x = 8,877,132 × 8,877,132
4. Step 4: Simplify right side
   4,290,084x = 78,803,472,545,424
5. Step 5: Solve for x
   x = 78,803,472,545,424/4,290,084
6. Step 6: Final answer
   x = 18,368,748.15