Finding the Third Proportional to 20,874,600 and 42,336,144

Step by Step Solution

1. Step 1: Write the proportion equation
   20,874,600 : 42,336,144 = 42,336,144 : x
2. Step 2: Convert to fraction form
   20,874,600/42,336,144 = 42,336,144/x
3. Step 3: Cross multiply
   20,874,600x = 42,336,144 × 42,336,144
4. Step 4: Simplify right side
   20,874,600x = 1,792,349,088,788,736
5. Step 5: Solve for x
   x = 1,792,349,088,788,736/20,874,600
6. Step 6: Final answer
   x = 85,862,679.47