Finding the Third Proportional to 380,173.50 and 816,507

Step by Step Solution

1. Step 1: Write the proportion equation
   380,173.50 : 816,507 = 816,507 : x
2. Step 2: Convert to fraction form
   380,173.50/816,507 = 816,507/x
3. Step 3: Cross multiply
   380,173.50x = 816,507 × 816,507
4. Step 4: Simplify right side
   380,173.50x = 666,683,681,049
5. Step 5: Solve for x
   x = 666,683,681,049/380,173.50
6. Step 6: Final answer
   x = 1,753,630.07