Finding the Third Proportional to 236,746.50 and 318,972

Step by Step Solution

1. Step 1: Write the proportion equation
   236,746.50 : 318,972 = 318,972 : x
2. Step 2: Convert to fraction form
   236,746.50/318,972 = 318,972/x
3. Step 3: Cross multiply
   236,746.50x = 318,972 × 318,972
4. Step 4: Simplify right side
   236,746.50x = 101,743,136,784
5. Step 5: Solve for x
   x = 101,743,136,784/236,746.50
6. Step 6: Final answer
   x = 429,755.61