Finding the Third Proportional to 89,346 and 243,045

Step by Step Solution

1. Step 1: Write the proportion equation
   89,346 : 243,045 = 243,045 : x
2. Step 2: Convert to fraction form
   89,346/243,045 = 243,045/x
3. Step 3: Cross multiply
   89,346x = 243,045 × 243,045
4. Step 4: Simplify right side
   89,346x = 59,070,872,025
5. Step 5: Solve for x
   x = 59,070,872,025/89,346
6. Step 6: Final answer
   x = 661,147.36