Finding the Third Proportional to 670,234 and 1,387,124

Step by Step Solution

1. Step 1: Write the proportion equation
   670,234 : 1,387,124 = 1,387,124 : x
2. Step 2: Convert to fraction form
   670,234/1,387,124 = 1,387,124/x
3. Step 3: Cross multiply
   670,234x = 1,387,124 × 1,387,124
4. Step 4: Simplify right side
   670,234x = 1,924,112,991,376
5. Step 5: Solve for x
   x = 1,924,112,991,376/670,234
6. Step 6: Final answer
   x = 2,870,807.79