Finding the Third Proportional to 145,173 and 312,592.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,173 : 312,592.50 = 312,592.50 : x
2. Step 2: Convert to fraction form
   145,173/312,592.50 = 312,592.50/x
3. Step 3: Cross multiply
   145,173x = 312,592.50 × 312,592.50
4. Step 4: Simplify right side
   145,173x = 97,714,071,056.25
5. Step 5: Solve for x
   x = 97,714,071,056.25/145,173
6. Step 6: Final answer
   x = 673,087.08