Finding the Third Proportional to 4,188,276 and 9,118,188

Step by Step Solution

1. Step 1: Write the proportion equation
   4,188,276 : 9,118,188 = 9,118,188 : x
2. Step 2: Convert to fraction form
   4,188,276/9,118,188 = 9,118,188/x
3. Step 3: Cross multiply
   4,188,276x = 9,118,188 × 9,118,188
4. Step 4: Simplify right side
   4,188,276x = 83,141,352,403,344
5. Step 5: Solve for x
   x = 83,141,352,403,344/4,188,276
6. Step 6: Final answer
   x = 19,850,972.67