Finding the Third Proportional to 8,485,942.50 and 18,892,620

Step by Step Solution

1. Step 1: Write the proportion equation
   8,485,942.50 : 18,892,620 = 18,892,620 : x
2. Step 2: Convert to fraction form
   8,485,942.50/18,892,620 = 18,892,620/x
3. Step 3: Cross multiply
   8,485,942.50x = 18,892,620 × 18,892,620
4. Step 4: Simplify right side
   8,485,942.50x = 356,931,090,464,400
5. Step 5: Solve for x
   x = 356,931,090,464,400/8,485,942.50
6. Step 6: Final answer
   x = 42,061,455.22