Finding the Third Proportional to 236,745 and 318,970.50

Step by Step Solution

1. Step 1: Write the proportion equation
   236,745 : 318,970.50 = 318,970.50 : x
2. Step 2: Convert to fraction form
   236,745/318,970.50 = 318,970.50/x
3. Step 3: Cross multiply
   236,745x = 318,970.50 × 318,970.50
4. Step 4: Simplify right side
   236,745x = 101,742,179,870.25
5. Step 5: Solve for x
   x = 101,742,179,870.25/236,745
6. Step 6: Final answer
   x = 429,754.29