Finding the Third Proportional to 432,340 and 615,876.50

Step by Step Solution

1. Step 1: Write the proportion equation
   432,340 : 615,876.50 = 615,876.50 : x
2. Step 2: Convert to fraction form
   432,340/615,876.50 = 615,876.50/x
3. Step 3: Cross multiply
   432,340x = 615,876.50 × 615,876.50
4. Step 4: Simplify right side
   432,340x = 379,303,863,252.25
5. Step 5: Solve for x
   x = 379,303,863,252.25/432,340
6. Step 6: Final answer
   x = 877,327.71