Finding the Third Proportional to 272,385 and 450,157.50

Step by Step Solution

1. Step 1: Write the proportion equation
   272,385 : 450,157.50 = 450,157.50 : x
2. Step 2: Convert to fraction form
   272,385/450,157.50 = 450,157.50/x
3. Step 3: Cross multiply
   272,385x = 450,157.50 × 450,157.50
4. Step 4: Simplify right side
   272,385x = 202,641,774,806.25
5. Step 5: Solve for x
   x = 202,641,774,806.25/272,385
6. Step 6: Final answer
   x = 743,953.50