Finding the Third Proportional to 577,917 and 920,389.50

Step by Step Solution

1. Step 1: Write the proportion equation
   577,917 : 920,389.50 = 920,389.50 : x
2. Step 2: Convert to fraction form
   577,917/920,389.50 = 920,389.50/x
3. Step 3: Cross multiply
   577,917x = 920,389.50 × 920,389.50
4. Step 4: Simplify right side
   577,917x = 847,116,831,710.25
5. Step 5: Solve for x
   x = 847,116,831,710.25/577,917
6. Step 6: Final answer
   x = 1,465,810.54