Finding the Third Proportional to 99,894 and 212,501.25

Step by Step Solution

1. Step 1: Write the proportion equation
   99,894 : 212,501.25 = 212,501.25 : x
2. Step 2: Convert to fraction form
   99,894/212,501.25 = 212,501.25/x
3. Step 3: Cross multiply
   99,894x = 212,501.25 × 212,501.25
4. Step 4: Simplify right side
   99,894x = 45,156,781,251.56
5. Step 5: Solve for x
   x = 45,156,781,251.56/99,894
6. Step 6: Final answer
   x = 452,046.98