Finding the Third Proportional to 272,200.50 and 423,063

Step by Step Solution

1. Step 1: Write the proportion equation
   272,200.50 : 423,063 = 423,063 : x
2. Step 2: Convert to fraction form
   272,200.50/423,063 = 423,063/x
3. Step 3: Cross multiply
   272,200.50x = 423,063 × 423,063
4. Step 4: Simplify right side
   272,200.50x = 178,982,301,969
5. Step 5: Solve for x
   x = 178,982,301,969/272,200.50
6. Step 6: Final answer
   x = 657,538.48