Finding the Third Proportional to 316,945.50 and 696,099

Step by Step Solution

1. Step 1: Write the proportion equation
   316,945.50 : 696,099 = 696,099 : x
2. Step 2: Convert to fraction form
   316,945.50/696,099 = 696,099/x
3. Step 3: Cross multiply
   316,945.50x = 696,099 × 696,099
4. Step 4: Simplify right side
   316,945.50x = 484,553,817,801
5. Step 5: Solve for x
   x = 484,553,817,801/316,945.50
6. Step 6: Final answer
   x = 1,528,823.78