Finding the Third Proportional to 212,040 and 453,496.50

Step by Step Solution

1. Step 1: Write the proportion equation
   212,040 : 453,496.50 = 453,496.50 : x
2. Step 2: Convert to fraction form
   212,040/453,496.50 = 453,496.50/x
3. Step 3: Cross multiply
   212,040x = 453,496.50 × 453,496.50
4. Step 4: Simplify right side
   212,040x = 205,659,075,512.25
5. Step 5: Solve for x
   x = 205,659,075,512.25/212,040
6. Step 6: Final answer
   x = 969,906.98