Finding the Third Proportional to 4,059,234 and 8,921,988

Step by Step Solution

1. Step 1: Write the proportion equation
   4,059,234 : 8,921,988 = 8,921,988 : x
2. Step 2: Convert to fraction form
   4,059,234/8,921,988 = 8,921,988/x
3. Step 3: Cross multiply
   4,059,234x = 8,921,988 × 8,921,988
4. Step 4: Simplify right side
   4,059,234x = 79,601,869,872,144
5. Step 5: Solve for x
   x = 79,601,869,872,144/4,059,234
6. Step 6: Final answer
   x = 19,610,071.72