Finding the Third Proportional to 1,782,405 and 3,711,688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,782,405 : 3,711,688.50 = 3,711,688.50 : x
2. Step 2: Convert to fraction form
   1,782,405/3,711,688.50 = 3,711,688.50/x
3. Step 3: Cross multiply
   1,782,405x = 3,711,688.50 × 3,711,688.50
4. Step 4: Simplify right side
   1,782,405x = 13,776,631,521,032.25
5. Step 5: Solve for x
   x = 13,776,631,521,032.25/1,782,405
6. Step 6: Final answer
   x = 7,729,237.47