Finding the Third Proportional to 37,139,317.50 and 81,453,090

Step by Step Solution

1. Step 1: Write the proportion equation
   37,139,317.50 : 81,453,090 = 81,453,090 : x
2. Step 2: Convert to fraction form
   37,139,317.50/81,453,090 = 81,453,090/x
3. Step 3: Cross multiply
   37,139,317.50x = 81,453,090 × 81,453,090
4. Step 4: Simplify right side
   37,139,317.50x = 6,634,605,870,548,100
5. Step 5: Solve for x
   x = 6,634,605,870,548,100/37,139,317.50
6. Step 6: Final answer
   x = 178,641,028.35