Finding the Third Proportional to 784,611.50 and 1,212,405.50

Step by Step Solution

1. Step 1: Write the proportion equation
   784,611.50 : 1,212,405.50 = 1,212,405.50 : x
2. Step 2: Convert to fraction form
   784,611.50/1,212,405.50 = 1,212,405.50/x
3. Step 3: Cross multiply
   784,611.50x = 1,212,405.50 × 1,212,405.50
4. Step 4: Simplify right side
   784,611.50x = 1,469,927,096,430.25
5. Step 5: Solve for x
   x = 1,469,927,096,430.25/784,611.50
6. Step 6: Final answer
   x = 1,873,445.77