Finding the Third Proportional to 84,495,496.78 and 178,069,777.31

Step by Step Solution

1. Step 1: Write the proportion equation
   84,495,496.78 : 178,069,777.31 = 178,069,777.31 : x
2. Step 2: Convert to fraction form
   84,495,496.78/178,069,777.31 = 178,069,777.31/x
3. Step 3: Cross multiply
   84,495,496.78x = 178,069,777.31 × 178,069,777.31
4. Step 4: Simplify right side
   84,495,496.78x = 31,708,845,592,123,340
5. Step 5: Solve for x
   x = 31,708,845,592,123,340/84,495,496.78
6. Step 6: Final answer
   x = 375,272,609.78