Finding the Third Proportional to 387,249 and 838,834.50

Step by Step Solution

1. Step 1: Write the proportion equation
   387,249 : 838,834.50 = 838,834.50 : x
2. Step 2: Convert to fraction form
   387,249/838,834.50 = 838,834.50/x
3. Step 3: Cross multiply
   387,249x = 838,834.50 × 838,834.50
4. Step 4: Simplify right side
   387,249x = 703,643,318,390.25
5. Step 5: Solve for x
   x = 703,643,318,390.25/387,249
6. Step 6: Final answer
   x = 1,817,030.69