Finding the Third Proportional to 387,166.50 and 830,403.56

Step by Step Solution

1. Step 1: Write the proportion equation
   387,166.50 : 830,403.56 = 830,403.56 : x
2. Step 2: Convert to fraction form
   387,166.50/830,403.56 = 830,403.56/x
3. Step 3: Cross multiply
   387,166.50x = 830,403.56 × 830,403.56
4. Step 4: Simplify right side
   387,166.50x = 689,570,076,612.69
5. Step 5: Solve for x
   x = 689,570,076,612.69/387,166.50
6. Step 6: Final answer
   x = 1,781,068.55