Finding the Third Proportional to 210,762 and 316,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   210,762 : 316,147.50 = 316,147.50 : x
2. Step 2: Convert to fraction form
   210,762/316,147.50 = 316,147.50/x
3. Step 3: Cross multiply
   210,762x = 316,147.50 × 316,147.50
4. Step 4: Simplify right side
   210,762x = 99,949,241,756.25
5. Step 5: Solve for x
   x = 99,949,241,756.25/210,762
6. Step 6: Final answer
   x = 474,228.00