Finding the Third Proportional to 133,158 and 286,612.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,158 : 286,612.50 = 286,612.50 : x
2. Step 2: Convert to fraction form
   133,158/286,612.50 = 286,612.50/x
3. Step 3: Cross multiply
   133,158x = 286,612.50 × 286,612.50
4. Step 4: Simplify right side
   133,158x = 82,146,725,156.25
5. Step 5: Solve for x
   x = 82,146,725,156.25/133,158
6. Step 6: Final answer
   x = 616,911.68