Finding the Third Proportional to 131,310 and 286,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,310 : 286,384.50 = 286,384.50 : x
2. Step 2: Convert to fraction form
   131,310/286,384.50 = 286,384.50/x
3. Step 3: Cross multiply
   131,310x = 286,384.50 × 286,384.50
4. Step 4: Simplify right side
   131,310x = 82,016,081,840.25
5. Step 5: Solve for x
   x = 82,016,081,840.25/131,310
6. Step 6: Final answer
   x = 624,598.90