Finding the Third Proportional to 9,850.78 and 21,085.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,850.78 : 21,085.52 = 21,085.52 : x
2. Step 2: Convert to fraction form
   9,850.78/21,085.52 = 21,085.52/x
3. Step 3: Cross multiply
   9,850.78x = 21,085.52 × 21,085.52
4. Step 4: Simplify right side
   9,850.78x = 444,599,298.63
5. Step 5: Solve for x
   x = 444,599,298.63/9,850.78
6. Step 6: Final answer
   x = 45,133.40