Finding the Third Proportional to 216,705 and 522,076.50

Step by Step Solution

1. Step 1: Write the proportion equation
   216,705 : 522,076.50 = 522,076.50 : x
2. Step 2: Convert to fraction form
   216,705/522,076.50 = 522,076.50/x
3. Step 3: Cross multiply
   216,705x = 522,076.50 × 522,076.50
4. Step 4: Simplify right side
   216,705x = 272,563,871,852.25
5. Step 5: Solve for x
   x = 272,563,871,852.25/216,705
6. Step 6: Final answer
   x = 1,257,764.57