Finding the Third Proportional to 161,700 and 340,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   161,700 : 340,156.50 = 340,156.50 : x
2. Step 2: Convert to fraction form
   161,700/340,156.50 = 340,156.50/x
3. Step 3: Cross multiply
   161,700x = 340,156.50 × 340,156.50
4. Step 4: Simplify right side
   161,700x = 115,706,444,492.25
5. Step 5: Solve for x
   x = 115,706,444,492.25/161,700
6. Step 6: Final answer
   x = 715,562.43