Finding the Third Proportional to 221,811 and 341,284.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,811 : 341,284.50 = 341,284.50 : x
2. Step 2: Convert to fraction form
   221,811/341,284.50 = 341,284.50/x
3. Step 3: Cross multiply
   221,811x = 341,284.50 × 341,284.50
4. Step 4: Simplify right side
   221,811x = 116,475,109,940.25
5. Step 5: Solve for x
   x = 116,475,109,940.25/221,811
6. Step 6: Final answer
   x = 525,109.71