Finding the Third Proportional to 617,695 and 921,145.50

Step by Step Solution

1. Step 1: Write the proportion equation
   617,695 : 921,145.50 = 921,145.50 : x
2. Step 2: Convert to fraction form
   617,695/921,145.50 = 921,145.50/x
3. Step 3: Cross multiply
   617,695x = 921,145.50 × 921,145.50
4. Step 4: Simplify right side
   617,695x = 848,509,032,170.25
5. Step 5: Solve for x
   x = 848,509,032,170.25/617,695
6. Step 6: Final answer
   x = 1,373,669.91