Finding the Third Proportional to 4,523,886 and 9,860,670

Step by Step Solution

1. Step 1: Write the proportion equation
   4,523,886 : 9,860,670 = 9,860,670 : x
2. Step 2: Convert to fraction form
   4,523,886/9,860,670 = 9,860,670/x
3. Step 3: Cross multiply
   4,523,886x = 9,860,670 × 9,860,670
4. Step 4: Simplify right side
   4,523,886x = 97,232,812,848,900
5. Step 5: Solve for x
   x = 97,232,812,848,900/4,523,886
6. Step 6: Final answer
   x = 21,493,205.81