Finding the Third Proportional to 20,613,013 and 42,921,567

Step by Step Solution

1. Step 1: Write the proportion equation
   20,613,013 : 42,921,567 = 42,921,567 : x
2. Step 2: Convert to fraction form
   20,613,013/42,921,567 = 42,921,567/x
3. Step 3: Cross multiply
   20,613,013x = 42,921,567 × 42,921,567
4. Step 4: Simplify right side
   20,613,013x = 1,842,260,913,735,489
5. Step 5: Solve for x
   x = 1,842,260,913,735,489/20,613,013
6. Step 6: Final answer
   x = 89,373,684.17