Finding the Third Proportional to 407,715 and 921,130.50

Step by Step Solution

1. Step 1: Write the proportion equation
   407,715 : 921,130.50 = 921,130.50 : x
2. Step 2: Convert to fraction form
   407,715/921,130.50 = 921,130.50/x
3. Step 3: Cross multiply
   407,715x = 921,130.50 × 921,130.50
4. Step 4: Simplify right side
   407,715x = 848,481,398,030.25
5. Step 5: Solve for x
   x = 848,481,398,030.25/407,715
6. Step 6: Final answer
   x = 2,081,064.95