Finding the Third Proportional to 4,188,254 and 9,118,134

Step by Step Solution

1. Step 1: Write the proportion equation
   4,188,254 : 9,118,134 = 9,118,134 : x
2. Step 2: Convert to fraction form
   4,188,254/9,118,134 = 9,118,134/x
3. Step 3: Cross multiply
   4,188,254x = 9,118,134 × 9,118,134
4. Step 4: Simplify right side
   4,188,254x = 83,140,367,641,956
5. Step 5: Solve for x
   x = 83,140,367,641,956/4,188,254
6. Step 6: Final answer
   x = 19,850,841.82