Finding the Third Proportional to 156,276 and 336,280.50

Step by Step Solution

1. Step 1: Write the proportion equation
   156,276 : 336,280.50 = 336,280.50 : x
2. Step 2: Convert to fraction form
   156,276/336,280.50 = 336,280.50/x
3. Step 3: Cross multiply
   156,276x = 336,280.50 × 336,280.50
4. Step 4: Simplify right side
   156,276x = 113,084,574,680.25
5. Step 5: Solve for x
   x = 113,084,574,680.25/156,276
6. Step 6: Final answer
   x = 723,620.87