Finding the Third Proportional to 221,346 and 307,414.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,346 : 307,414.50 = 307,414.50 : x
2. Step 2: Convert to fraction form
   221,346/307,414.50 = 307,414.50/x
3. Step 3: Cross multiply
   221,346x = 307,414.50 × 307,414.50
4. Step 4: Simplify right side
   221,346x = 94,503,674,810.25
5. Step 5: Solve for x
   x = 94,503,674,810.25/221,346
6. Step 6: Final answer
   x = 426,950.00