Finding the Third Proportional to 221,315 and 334,607.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,315 : 334,607.50 = 334,607.50 : x
2. Step 2: Convert to fraction form
   221,315/334,607.50 = 334,607.50/x
3. Step 3: Cross multiply
   221,315x = 334,607.50 × 334,607.50
4. Step 4: Simplify right side
   221,315x = 111,962,179,056.25
5. Step 5: Solve for x
   x = 111,962,179,056.25/221,315
6. Step 6: Final answer
   x = 505,895.12