Finding the Third Proportional to 223,658.72 and 345,546

Step by Step Solution

1. Step 1: Write the proportion equation
   223,658.72 : 345,546 = 345,546 : x
2. Step 2: Convert to fraction form
   223,658.72/345,546 = 345,546/x
3. Step 3: Cross multiply
   223,658.72x = 345,546 × 345,546
4. Step 4: Simplify right side
   223,658.72x = 119,402,038,116
5. Step 5: Solve for x
   x = 119,402,038,116/223,658.72
6. Step 6: Final answer
   x = 533,858.19