Finding the Third Proportional to 4,290,088 and 8,877,140

Step by Step Solution

1. Step 1: Write the proportion equation
   4,290,088 : 8,877,140 = 8,877,140 : x
2. Step 2: Convert to fraction form
   4,290,088/8,877,140 = 8,877,140/x
3. Step 3: Cross multiply
   4,290,088x = 8,877,140 × 8,877,140
4. Step 4: Simplify right side
   4,290,088x = 78,803,614,579,600
5. Step 5: Solve for x
   x = 78,803,614,579,600/4,290,088
6. Step 6: Final answer
   x = 18,368,764.13