Finding the Third Proportional to 81,630,111.75 and 177,608,491.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,630,111.75 : 177,608,491.50 = 177,608,491.50 : x
2. Step 2: Convert to fraction form
   81,630,111.75/177,608,491.50 = 177,608,491.50/x
3. Step 3: Cross multiply
   81,630,111.75x = 177,608,491.50 × 177,608,491.50
4. Step 4: Simplify right side
   81,630,111.75x = 31,544,776,252,905,572
5. Step 5: Solve for x
   x = 31,544,776,252,905,572/81,630,111.75
6. Step 6: Final answer
   x = 386,435,539.25