Finding the Third Proportional to 20,296,458 and 42,585,819.75

Step by Step Solution

1. Step 1: Write the proportion equation
   20,296,458 : 42,585,819.75 = 42,585,819.75 : x
2. Step 2: Convert to fraction form
   20,296,458/42,585,819.75 = 42,585,819.75/x
3. Step 3: Cross multiply
   20,296,458x = 42,585,819.75 × 42,585,819.75
4. Step 4: Simplify right side
   20,296,458x = 1,813,552,043,779,490
5. Step 5: Solve for x
   x = 1,813,552,043,779,490/20,296,458
6. Step 6: Final answer
   x = 89,353,129.68