Finding the Third Proportional to 684,141 and 1,073,209.50

Step by Step Solution

1. Step 1: Write the proportion equation
   684,141 : 1,073,209.50 = 1,073,209.50 : x
2. Step 2: Convert to fraction form
   684,141/1,073,209.50 = 1,073,209.50/x
3. Step 3: Cross multiply
   684,141x = 1,073,209.50 × 1,073,209.50
4. Step 4: Simplify right side
   684,141x = 1,151,778,630,890.25
5. Step 5: Solve for x
   x = 1,151,778,630,890.25/684,141
6. Step 6: Final answer
   x = 1,683,539.84