Finding the Third Proportional to 420,147 and 921,928.50

Step by Step Solution

1. Step 1: Write the proportion equation
   420,147 : 921,928.50 = 921,928.50 : x
2. Step 2: Convert to fraction form
   420,147/921,928.50 = 921,928.50/x
3. Step 3: Cross multiply
   420,147x = 921,928.50 × 921,928.50
4. Step 4: Simplify right side
   420,147x = 849,952,159,112.25
5. Step 5: Solve for x
   x = 849,952,159,112.25/420,147
6. Step 6: Final answer
   x = 2,022,987.57