Finding the Third Proportional to 291,152.50 and 617,297

Step by Step Solution

1. Step 1: Write the proportion equation
   291,152.50 : 617,297 = 617,297 : x
2. Step 2: Convert to fraction form
   291,152.50/617,297 = 617,297/x
3. Step 3: Cross multiply
   291,152.50x = 617,297 × 617,297
4. Step 4: Simplify right side
   291,152.50x = 381,055,586,209
5. Step 5: Solve for x
   x = 381,055,586,209/291,152.50
6. Step 6: Final answer
   x = 1,308,783.49