Finding the Third Proportional to 20,632,457 and 42,939,499

Step by Step Solution

1. Step 1: Write the proportion equation
   20,632,457 : 42,939,499 = 42,939,499 : x
2. Step 2: Convert to fraction form
   20,632,457/42,939,499 = 42,939,499/x
3. Step 3: Cross multiply
   20,632,457x = 42,939,499 × 42,939,499
4. Step 4: Simplify right side
   20,632,457x = 1,843,800,574,371,001
5. Step 5: Solve for x
   x = 1,843,800,574,371,001/20,632,457
6. Step 6: Final answer
   x = 89,364,081.77