Finding the Third Proportional to 387,334.50 and 839,010

Step by Step Solution

1. Step 1: Write the proportion equation
   387,334.50 : 839,010 = 839,010 : x
2. Step 2: Convert to fraction form
   387,334.50/839,010 = 839,010/x
3. Step 3: Cross multiply
   387,334.50x = 839,010 × 839,010
4. Step 4: Simplify right side
   387,334.50x = 703,937,780,100
5. Step 5: Solve for x
   x = 703,937,780,100/387,334.50
6. Step 6: Final answer
   x = 1,817,389.83