Finding the Third Proportional to 146,807 and 312,842.50

Step by Step Solution

1. Step 1: Write the proportion equation
   146,807 : 312,842.50 = 312,842.50 : x
2. Step 2: Convert to fraction form
   146,807/312,842.50 = 312,842.50/x
3. Step 3: Cross multiply
   146,807x = 312,842.50 × 312,842.50
4. Step 4: Simplify right side
   146,807x = 97,870,429,806.25
5. Step 5: Solve for x
   x = 97,870,429,806.25/146,807
6. Step 6: Final answer
   x = 666,660.51