Finding the Third Proportional to 12,983,945.63 and 20,184,688.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,983,945.63 : 20,184,688.69 = 20,184,688.69 : x
2. Step 2: Convert to fraction form
   12,983,945.63/20,184,688.69 = 20,184,688.69/x
3. Step 3: Cross multiply
   12,983,945.63x = 20,184,688.69 × 20,184,688.69
4. Step 4: Simplify right side
   12,983,945.63x = 407,421,657,411,290.50
5. Step 5: Solve for x
   x = 407,421,657,411,290.50/12,983,945.63
6. Step 6: Final answer
   x = 31,378,878.90