Finding the Third Proportional to 379,432.50 and 812,658

Step by Step Solution

1. Step 1: Write the proportion equation
   379,432.50 : 812,658 = 812,658 : x
2. Step 2: Convert to fraction form
   379,432.50/812,658 = 812,658/x
3. Step 3: Cross multiply
   379,432.50x = 812,658 × 812,658
4. Step 4: Simplify right side
   379,432.50x = 660,413,024,964
5. Step 5: Solve for x
   x = 660,413,024,964/379,432.50
6. Step 6: Final answer
   x = 1,740,528.35