Finding the Third Proportional to 221,470 and 343,580.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,470 : 343,580.50 = 343,580.50 : x
2. Step 2: Convert to fraction form
   221,470/343,580.50 = 343,580.50/x
3. Step 3: Cross multiply
   221,470x = 343,580.50 × 343,580.50
4. Step 4: Simplify right side
   221,470x = 118,047,559,980.25
5. Step 5: Solve for x
   x = 118,047,559,980.25/221,470
6. Step 6: Final answer
   x = 533,018.29